Average power millimeter wave band travelling wave tube

There is a problem of development of TWTs with operation voltages in units of kV This paper presents the results of research and development of TWT on adjacent resonator chains (ARCs) for 8-mm and 5-mm waves ranges with output power of 5W and 2W, respectively. These TWT have 4-5 kV operation voltages. The 8-mm wave range TWT with much lower operation voltages of 2.0-2.5kV and output power of 2W is also described. In this device, as a slow-wave system, the double ladder structure (DLS) in the X-shaped waveguide is selected. To the authors, this waveguide type is the most eligible one for low-voltage TWT.